YX 140cc Engine, with Kick Start, Clutch 4 speed
with Lights!!
Engine is assembled and ready to install. This
engine bolts in the Honda style frame CT70, CRF50/ XR50. THIS WILL NOT FIT
A HONDA ST90 WITHOUT FRAME MODIFICATION. Stock footpegs will not work. You
will need our aftermarket footpeg assembly (TB148). There is a lighting coil in
this engine. This is a 12v CDI system so
you will need to review your wiring needs for your application. Our engines are
specifically made to OEM Honda standard diameter, so there is no special
sprocket that is needed for your gearing options.
Trailbuddy engines have an installed 420 front sprocket not
a 428- so no need to worry about modifying or changing the rear sprocket you
already have installed. This will make it easier for you to gear your
bike to either top or low end. You can find the front and rear sprockets
under the CT70 section in the subcategory “sprockets”. Our engines are not
heavily gusseted by the top engine bolt which allow for a clean and easy
mounting experience. You may want to install the motor with new mounting bolts,
please see TB128 and TB129B, respectively.
Our engines also have a full wave rectifier which is a more
efficient and smoother rectification. A
full wave rectifier is double the half wave because it converts both cycles of
AC to DC. The ripple factor is less in a
full wave rectifier, so the waveform is smooth and easy to filter out.
It
is highly recommended that you purchase this fuel switch to
work with the carb that comes with our
motors: https://mytrailbuddystore.com/fueltankswitch.aspx. The carb has a
single fuel inlet while the gas tank will have a dual outlet.
The motor includes:
25mm Molkt Carb (main jet 102), intake manifold, gasket, bolts, spark plug, gear
shift lever, kick start lever, 48mm black dual stage air filter, CDI, Ignition coil,
12v Full Wave Rectifier/Voltage Regulator.
**If you are wanting a higher performance carburetor, we highly recommend our Keihin carb. https://mytrailbuddystore.com/pe26keihincarb.aspx
We
have included additional insurance on all motors. The cost is already built
into the handling fee.
Engine
Type: 4-Stroke
Cylinder
Arrangement: Single Cylinder, Camshaft pointing upward tilting 10 degrees
Max
Power: 11 hp
Max
Torque: 7.5 ft-ib
Displacement:
140
Bore
x Stroke: 56 x 57
Starting:
Kick start
Clutch
Type: Manual oil bath multi plate
Transmission
Type: Constant mesh, two stage transmission, 4-speed gearshift
Gear
Shift Pattern: N-1-2-3-4
Front
Sprocket: 16t/420
**Break in instructions: https://mytrailbuddystore.com/tb160labeledwiringharnesswithschematic.aspx
Wire connections for the YX motors:
Blue/White wire: Pulse
Yellow: Lights out - Pick One
Green/white: Ground
Black/Red: CDI Voltage from Stator
Yellow : AC out - Pick One
Oil
is 10w30 or 40 absolutely no more than 700cc from complete drain
You
will also need a clutch cable and a clutch lever assembly, if one is not
present. We recommend the following two options:
The
PU43-1101L (http://mytrailbuddystore.com/universalleverandmount.aspx and
the specifically designed cable TB436 (http://mytrailbuddystore.com/greycloneclutchcablefor140cc.aspx)
OR
Our
TB026LH (http://mytrailbuddystore.com/ct70lefthandlebarcontroller.aspx)
and the specifically designed cable TB435 (http://mytrailbuddystore.com/greyclutchcableforgenericclonemotor.aspx)